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United States Patent | 5,644,598 |
Bidese | July 1, 1997 |
A switching arrangement is provided for coupling a transmitting unit to a transmission line. According to the present invention, a transformer is provided, whose secondary winding is a portion of the transmission line and whose primary winding is connected with the transmitting unit and integrated into a parallel resonance circuit, whose resonant frequency is tuned, each time, to the carrier frequency of the transmitted signal. In addition, a tuning unit may be provided for the automatic tuning of the parallel resonance circuit.
Inventors: | Bidese; Werner (Zurich, CH) |
Assignee: | Siemens Schweiz AG (Zurich, CH) |
Appl. No.: | 175373 |
Filed: | January 11, 1994 |
PCT Filed: | May 18, 1993 |
PCT NO: | PCT/CH93/00125 |
371 Date: | January 11, 1994 |
102(e) Date: | January 11, 1994 |
PCT PUB.NO.: | WO93/25011 |
PCT PUB. Date: | December 9, 1993 |
May 26, 1992[CH] | 01695/92 |
Current U.S. Class: | 375/258; 333/154; 333/175; 370/308; 375/257; 375/304 |
Intern'l Class: | H04B 003/00; H04L 025/00 |
Field of Search: | 375/257,304,312,352,377,258 340/310 A,310 R 455/17,26.1,193.2,191.3,195.1 370/51,52 333/154,175 |
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International Search Report and Annex. |